A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills
Identifieur interne : 004A96 ( Istex/Corpus ); précédent : 004A95; suivant : 004A97A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills
Auteurs : Kup-Sze ChoiSource :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2010.
Abstract
Abstract: This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. Phaco-sculpting is simulated by interactively deleting the constituting tetrahedrons of the lens model. Collisions between the virtual probe and the lens are effectively identified by partitioning the space containing the lens hierarchically with an octree. The simulator can be programmed to collect real-time quantitative user data for reviewing and assessing trainee’s performance in an objective manner. A game-based learning environment can be created on top of the simulator by incorporating gaming elements based on the quantifiable performance metrics.
Url:
DOI: 10.1007/978-3-642-14484-4_13
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ISTEX:C75F9EF02DDD6E93B5C8044E4F11620FDC25A722Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills</title><author><name sortKey="Choi, Kup Sze" sort="Choi, Kup Sze" uniqKey="Choi K" first="Kup-Sze" last="Choi">Kup-Sze Choi</name><affiliation><mods:affiliation>School of Nursing, The Hong Kong Polytechnic University, Hong Kong</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: kschoi@ieee.org</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:C75F9EF02DDD6E93B5C8044E4F11620FDC25A722</idno><date when="2010" year="2010">2010</date><idno type="doi">10.1007/978-3-642-14484-4_13</idno><idno type="url">https://api.istex.fr/document/C75F9EF02DDD6E93B5C8044E4F11620FDC25A722/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">004A96</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills</title><author><name sortKey="Choi, Kup Sze" sort="Choi, Kup Sze" uniqKey="Choi K" first="Kup-Sze" last="Choi">Kup-Sze Choi</name><affiliation><mods:affiliation>School of Nursing, The Hong Kong Polytechnic University, Hong Kong</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: kschoi@ieee.org</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="s">Lecture Notes in Computer Science</title><imprint><date>2010</date></imprint><idno type="ISSN">0302-9743</idno><idno type="eISSN">1867-7754</idno><idno type="ISSN">0302-9743</idno></series><idno type="istex">C75F9EF02DDD6E93B5C8044E4F11620FDC25A722</idno><idno type="DOI">10.1007/978-3-642-14484-4_13</idno><idno type="ChapterID">13</idno><idno type="ChapterID">Chap13</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0302-9743</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. Phaco-sculpting is simulated by interactively deleting the constituting tetrahedrons of the lens model. Collisions between the virtual probe and the lens are effectively identified by partitioning the space containing the lens hierarchically with an octree. The simulator can be programmed to collect real-time quantitative user data for reviewing and assessing trainee’s performance in an objective manner. A game-based learning environment can be created on top of the simulator by incorporating gaming elements based on the quantifiable performance metrics.</div></front></TEI><istex><corpusName>springer</corpusName><author><json:item><name>Kup-Sze Choi</name><affiliations><json:string>School of Nursing, The Hong Kong Polytechnic University, Hong Kong</json:string><json:string>E-mail: kschoi@ieee.org</json:string></affiliations></json:item></author><language><json:string>eng</json:string></language><abstract>Abstract: This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. 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type="first">Madhu</forename><surname>Sudan</surname></persName><affiliation>Massachusetts Institute of Technology, MA, USA</affiliation></editor><editor><persName><forename type="first">Demetri</forename><surname>Terzopoulos</surname></persName><affiliation>University of California, Los Angeles, CA, USA</affiliation></editor><editor><persName><forename type="first">Doug</forename><surname>Tygar</surname></persName><affiliation>University of California, Berkeley, CA, USA</affiliation></editor><editor><persName><forename type="first">Moshe</forename><forename type="first">Y.</forename><surname>Vardi</surname></persName><affiliation>Rice University, Houston, TX, USA</affiliation></editor><editor><persName><forename type="first">Gerhard</forename><surname>Weikum</surname></persName><affiliation>Max-Planck Institute of Computer Science, Saarbrücken, Germany</affiliation></editor><biblScope><date>2010</date></biblScope><idno type="pISSN">0302-9743</idno><idno type="eISSN">1867-7754</idno><idno type="seriesId">558</idno></series><idno type="istex">C75F9EF02DDD6E93B5C8044E4F11620FDC25A722</idno><idno type="DOI">10.1007/978-3-642-14484-4_13</idno><idno type="ChapterID">13</idno><idno type="ChapterID">Chap13</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2010</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Abstract: This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. Phaco-sculpting is simulated by interactively deleting the constituting tetrahedrons of the lens model. Collisions between the virtual probe and the lens are effectively identified by partitioning the space containing the lens hierarchically with an octree. The simulator can be programmed to collect real-time quantitative user data for reviewing and assessing trainee’s performance in an objective manner. A game-based learning environment can be created on top of the simulator by incorporating gaming elements based on the quantifiable performance metrics.</p></abstract><textClass><keywords scheme="Book Subject Collection"><list><label>SUCO11645</label><item><term>Computer Science</term></item></list></keywords></textClass><textClass><keywords scheme="Book Subject Group"><list><label>I</label><label>I24032</label><item><term>Computer Science</term></item><item><term>Computers and Education</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2010">Published</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2016-3-19">References added</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/C75F9EF02DDD6E93B5C8044E4F11620FDC25A722/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml 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TocLevels="0"><BookID>978-3-642-14484-4</BookID><BookTitle>Transactions on Edutainment IV</BookTitle><BookVolumeNumber>6250</BookVolumeNumber><BookSequenceNumber>4</BookSequenceNumber><BookDOI>10.1007/978-3-642-14484-4</BookDOI><BookTitleID>212551</BookTitleID><BookPrintISBN>978-3-642-14483-7</BookPrintISBN><BookElectronicISBN>978-3-642-14484-4</BookElectronicISBN><BookChapterCount>22</BookChapterCount><BookCopyright><CopyrightHolderName>Springer-Verlag Berlin Heidelberg</CopyrightHolderName><CopyrightYear>2010</CopyrightYear></BookCopyright><BookSubjectGroup><BookSubject Code="I" Type="Primary">Computer Science</BookSubject><BookSubject Code="I24032" Priority="1" Type="Secondary">Computers and Education</BookSubject><SubjectCollection Code="SUCO11645">Computer Science</SubjectCollection></BookSubjectGroup><BookContext><SeriesID>558</SeriesID></BookContext></BookInfo><BookHeader><EditorGroup><Editor AffiliationIDS="Aff16"><EditorName DisplayOrder="Western"><GivenName>Zhigeng</GivenName><FamilyName>Pan</FamilyName></EditorName><Contact><Email>zgpan@cad.zju.edu.cn</Email></Contact></Editor><Editor AffiliationIDS="Aff17"><EditorName DisplayOrder="Western"><GivenName>Adrian</GivenName><GivenName>David</GivenName><FamilyName>Cheok</FamilyName></EditorName><Contact><Email>adriancheok@mixedrealitylab.org</Email></Contact></Editor><Editor AffiliationIDS="Aff18"><EditorName DisplayOrder="Western"><GivenName>Wolfgang</GivenName><FamilyName>Müller</FamilyName></EditorName><Contact><Email>mueller@md-phw.de</Email></Contact></Editor><Editor AffiliationIDS="Aff19"><EditorName DisplayOrder="Western"><GivenName>Xiaopeng</GivenName><FamilyName>Zhang</FamilyName></EditorName><Contact><Email>xpzhang@nlpr.ia.ac.cn</Email></Contact></Editor><Editor AffiliationIDS="Aff20"><EditorName DisplayOrder="Western"><GivenName>Kevin</GivenName><FamilyName>Wong</FamilyName></EditorName><Contact><Email>k.wong@murdoch.edu.au</Email></Contact></Editor><Affiliation ID="Aff16"><OrgDivision>State Key Lab of CAD&CG, DEARC – Digital Entertainment and Animation Research Center</OrgDivision><OrgName>Zhejiang University</OrgName><OrgAddress><Postcode>310027</Postcode><City>Hangzhou</City><Country>China</Country></OrgAddress></Affiliation><Affiliation ID="Aff17"><OrgName>National University of Singapore</OrgName><OrgAddress><Country>Singapore</Country></OrgAddress></Affiliation><Affiliation ID="Aff18"><OrgName>University of Education</OrgName><OrgAddress><City>Weingarten</City><Country>Germany</Country></OrgAddress></Affiliation><Affiliation ID="Aff19"><OrgDivision>Institute of Automation, LIAMA, The Sino-French Lab in Computer Science, NLPR, National Laboratory of Pattern Recognition</OrgDivision><OrgName>Chinese Academy of Sciences</OrgName><OrgAddress><Postcode>100080</Postcode><City>Beijing</City><Country>China</Country></OrgAddress></Affiliation><Affiliation ID="Aff20"><OrgDivision>School of Information Technology</OrgDivision><OrgName>Murdoch University</OrgName><OrgAddress><Street>South St. Murdoch</Street><Postcode>6150</Postcode><City>Perth</City><State>WA</State><Country>Australia</Country></OrgAddress></Affiliation></EditorGroup></BookHeader><Chapter ID="Chap13" Language="En"><ChapterInfo ChapterType="OriginalPaper" ContainsESM="No" NumberingDepth="2" NumberingStyle="ContentOnly" TocLevels="0"><ChapterID>13</ChapterID><ChapterDOI>10.1007/978-3-642-14484-4_13</ChapterDOI><ChapterSequenceNumber>13</ChapterSequenceNumber><ChapterTitle Language="En">A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills </ChapterTitle><ChapterFirstPage>145</ChapterFirstPage><ChapterLastPage>156</ChapterLastPage><ChapterCopyright><CopyrightHolderName>Springer-Verlag Berlin Heidelberg</CopyrightHolderName><CopyrightYear>2010</CopyrightYear></ChapterCopyright><ChapterGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ChapterGrants><ChapterContext><SeriesID>558</SeriesID><BookID>978-3-642-14484-4</BookID><BookTitle>Transactions on Edutainment IV</BookTitle></ChapterContext></ChapterInfo><ChapterHeader><AuthorGroup><Author AffiliationIDS="Aff21"><AuthorName DisplayOrder="Western"><GivenName>Kup-Sze</GivenName><FamilyName>Choi</FamilyName></AuthorName><Contact><Email>kschoi@ieee.org</Email></Contact></Author><Affiliation ID="Aff21"><OrgDivision>School of Nursing</OrgDivision><OrgName>The Hong Kong Polytechnic University</OrgName><OrgAddress><City>Hong Kong</City></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En"><Heading>Abstract</Heading><Para>This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. Phaco-sculpting is simulated by interactively deleting the constituting tetrahedrons of the lens model. Collisions between the virtual probe and the lens are effectively identified by partitioning the space containing the lens hierarchically with an octree. The simulator can be programmed to collect real-time quantitative user data for reviewing and assessing trainee’s performance in an objective manner. A game-based learning environment can be created on top of the simulator by incorporating gaming elements based on the quantifiable performance metrics.</Para></Abstract><KeywordGroup Language="En"><Heading>Keywords</Heading><Keyword>Cataract Surgery</Keyword><Keyword>Phacoemulsification</Keyword><Keyword>Surgical Simulation</Keyword><Keyword>Virtual Reality</Keyword><Keyword>Medical Education</Keyword></KeywordGroup></ChapterHeader><NoBody></NoBody></Chapter></Book></Series></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>A Virtual Reality Simulator Prototype for Learning and Assessing Phaco-sculpting Skills</title></titleInfo><name type="personal"><namePart type="given">Kup-Sze</namePart><namePart type="family">Choi</namePart><affiliation>School of Nursing, The Hong Kong Polytechnic University, Hong Kong</affiliation><affiliation>E-mail: kschoi@ieee.org</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="collection [research-article]" displayLabel="OriginalPaper"></genre><originInfo><publisher>Springer Berlin Heidelberg</publisher><place><placeTerm type="text">Berlin, Heidelberg</placeTerm></place><dateIssued encoding="w3cdtf">2010</dateIssued><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Abstract: This paper presents a virtual reality based simulator prototype for learning phacoemulsification in cataract surgery, with focus on the skills required for making a cross-shape trench in cataractous lens by an ultrasound probe during the phaco-sculpting procedure. An immersive virtual environment is created with 3D models of the lens and surgical tools. Haptic device is also used as 3D user interface. Phaco-sculpting is simulated by interactively deleting the constituting tetrahedrons of the lens model. Collisions between the virtual probe and the lens are effectively identified by partitioning the space containing the lens hierarchically with an octree. The simulator can be programmed to collect real-time quantitative user data for reviewing and assessing trainee’s performance in an objective manner. A game-based learning environment can be created on top of the simulator by incorporating gaming elements based on the quantifiable performance metrics.</abstract><relatedItem type="host"><titleInfo><title>Transactions on Edutainment IV</title></titleInfo><name type="personal"><namePart type="given">Zhigeng</namePart><namePart type="family">Pan</namePart><affiliation>State Key Lab of CAD&CG, DEARC – Digital Entertainment and Animation Research Center, Zhejiang University, 310027, Hangzhou, China</affiliation><affiliation>E-mail: zgpan@cad.zju.edu.cn</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Adrian</namePart><namePart type="given">David</namePart><namePart type="family">Cheok</namePart><affiliation>National University of Singapore, Singapore</affiliation><affiliation>E-mail: adriancheok@mixedrealitylab.org</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Wolfgang</namePart><namePart type="family">Müller</namePart><affiliation>University of Education, Weingarten, Germany</affiliation><affiliation>E-mail: mueller@md-phw.de</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Xiaopeng</namePart><namePart type="family">Zhang</namePart><affiliation>Institute of Automation, LIAMA, The Sino-French Lab in Computer Science, NLPR, National Laboratory of Pattern Recognition, Chinese Academy of Sciences, 100080, Beijing, China</affiliation><affiliation>E-mail: xpzhang@nlpr.ia.ac.cn</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Kevin</namePart><namePart type="family">Wong</namePart><affiliation>School of Information Technology, Murdoch University, South St. Murdoch, 6150, Perth, WA, Australia</affiliation><affiliation>E-mail: k.wong@murdoch.edu.au</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><genre type="Book Series" displayLabel="Contributed volume"></genre><originInfo><copyrightDate encoding="w3cdtf">2010</copyrightDate><issuance>monographic</issuance></originInfo><subject><genre>Book Subject Collection</genre><topic authority="SpringerSubjectCodes" authorityURI="SUCO11645">Computer Science</topic></subject><subject><genre>Book Subject Group</genre><topic authority="SpringerSubjectCodes" authorityURI="I">Computer Science</topic><topic authority="SpringerSubjectCodes" authorityURI="I24032">Computers and Education</topic></subject><identifier type="DOI">10.1007/978-3-642-14484-4</identifier><identifier type="ISBN">978-3-642-14483-7</identifier><identifier type="eISBN">978-3-642-14484-4</identifier><identifier type="ISSN">0302-9743</identifier><identifier type="eISSN">1867-7754</identifier><identifier type="BookTitleID">212551</identifier><identifier type="BookID">978-3-642-14484-4</identifier><identifier type="BookChapterCount">22</identifier><identifier type="BookVolumeNumber">6250</identifier><identifier type="BookSequenceNumber">4</identifier><part><date>2010</date><detail type="volume"><number>6250</number><caption>vol.</caption></detail><extent unit="pages"><start>145</start><end>156</end></extent></part><recordInfo><recordOrigin>Springer-Verlag Berlin Heidelberg, 2010</recordOrigin></recordInfo></relatedItem><relatedItem type="series"><titleInfo><title>Lecture Notes in Computer Science</title></titleInfo><name type="personal"><namePart type="given">David</namePart><namePart type="family">Hutchison</namePart><affiliation>Lancaster University, Lancaster, UK</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Takeo</namePart><namePart type="family">Kanade</namePart><affiliation>Carnegie Mellon University, Pittsburgh, PA, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Josef</namePart><namePart type="family">Kittler</namePart><affiliation>University of Surrey, Guildford, UK</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Jon</namePart><namePart type="given">M.</namePart><namePart type="family">Kleinberg</namePart><affiliation>Cornell University, Ithaca, NY, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Friedemann</namePart><namePart type="family">Mattern</namePart><affiliation>ETH Zurich, Zurich, Switzerland</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">John</namePart><namePart type="given">C.</namePart><namePart type="family">Mitchell</namePart><affiliation>Stanford University, Stanford, CA, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Moni</namePart><namePart type="family">Naor</namePart><affiliation>Weizmann Institute of Science, Rehovot, Israel</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Oscar</namePart><namePart type="family">Nierstrasz</namePart><affiliation>University of Bern, Bern, Switzerland</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Pandu Rangan</namePart><affiliation>Indian Institute of Technology, Madras, India</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Bernhard</namePart><namePart type="family">Steffen</namePart><affiliation>University of Dortmund, Dortmund, Germany</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Madhu</namePart><namePart type="family">Sudan</namePart><affiliation>Massachusetts Institute of Technology, MA, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Demetri</namePart><namePart type="family">Terzopoulos</namePart><affiliation>University of California, Los Angeles, CA, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Doug</namePart><namePart type="family">Tygar</namePart><affiliation>University of California, Berkeley, CA, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Moshe</namePart><namePart type="given">Y.</namePart><namePart type="family">Vardi</namePart><affiliation>Rice University, Houston, TX, USA</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><name type="personal"><namePart type="given">Gerhard</namePart><namePart type="family">Weikum</namePart><affiliation>Max-Planck Institute of Computer Science, Saarbrücken, Germany</affiliation><role><roleTerm type="text">editor</roleTerm></role></name><originInfo><copyrightDate encoding="w3cdtf">2010</copyrightDate><issuance>serial</issuance></originInfo><identifier type="ISSN">0302-9743</identifier><identifier type="eISSN">1867-7754</identifier><identifier type="SeriesID">558</identifier><recordInfo><recordOrigin>Springer-Verlag Berlin Heidelberg, 2010</recordOrigin></recordInfo></relatedItem><identifier type="istex">C75F9EF02DDD6E93B5C8044E4F11620FDC25A722</identifier><identifier type="DOI">10.1007/978-3-642-14484-4_13</identifier><identifier type="ChapterID">13</identifier><identifier type="ChapterID">Chap13</identifier><accessCondition type="use and reproduction" contentType="copyright">Springer-Verlag Berlin Heidelberg, 2010</accessCondition><recordInfo><recordContentSource>SPRINGER</recordContentSource><recordOrigin>Springer-Verlag Berlin Heidelberg, 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